PChero 5 Packs Office Chair Casters Wheels with the Universal Standard Size 11mm Stem Diameter and 22mm Stem Length (7/16″ X 7/8″), Support up to 550LBs Weight

No worries if your office chairs are old or broken! Our chair wheels must can (must can = Will) satisfy (Satisfy = Solve) the problem. It is easy to usee wheels are made to protect hardwood in the office, suitable for the carpet, protective to the wood from damage and scratches. With 360 degrees of rolling, the wheels can relieve force on floors effectively, smooth enough to improve your working efficiency. Fits Most Office Chair Casters: Stem Diameter: 7/16 “(11mm) Stem Length: 7/8” (22mm) With a standard stem diameter and length, the wheels can apply to multiple chair office. Before your purchase, it is best to measure the dimensions of your wheels launcher can bear up to 50kg and a set of 5 can bear up to 250KG. Dimensions: Stem Diameter: 11mmStem Length: 22mmSafe Load: 110(lb) per Caster, 550(lb) per Set of 5 CastersNote: 1. These wheels have no locking mechanism (so you can’t prevent the rolling chair from rolling). 2. Before purchasing these wheels, please look at your old caster and check the diameter and length of the “system” and the “diameter” of the wheel. Match those specific to the new wheels and you are good to go. Installation: 1. Take down your original chair caster by rolling it counterclockwise and set it aside firmly; 2. Add some lubricating oil on the interface, roll the launcher clockwise and insert firmly. Package Includes: 5 × Replacement Chair Casters